From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 30066 invoked by alias); 2 Jun 2006 07:15:19 -0000 Received: (qmail 30056 invoked by uid 22791); 2 Jun 2006 07:15:17 -0000 X-Spam-Check-By: sourceware.org Received: from Unknown (HELO neomail.neotel.com.mk) (80.77.144.11) by sourceware.org (qpsmtpd/0.31) with ESMTP; Fri, 02 Jun 2006 07:15:10 +0000 Received: from [80.77.156.156] (account ilijak@siva.com.mk HELO [192.168.209.21]) by neomail.neotel.com.mk (CommuniGate Pro SMTP 5.0.6) with ESMTPA id 1254113; Fri, 02 Jun 2006 09:12:04 +0200 Message-ID: <447FE579.2070706@siva.com.mk> Date: Fri, 02 Jun 2006 07:15:00 -0000 From: Ilija Koco User-Agent: Thunderbird 1.5 (X11/20051201) MIME-Version: 1.0 To: "Moussa A. Ba" , ecos-discuss@ecos.sourceware.org References: <447F1846.7050007@embedded-zone.com> <20060601180003.GL2478@lunn.ch> <447F2C35.9070402@embedded-zone.com> <20060601192809.GB15114@lunn.ch> In-Reply-To: <20060601192809.GB15114@lunn.ch> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-IsSubscribed: yes Mailing-List: contact ecos-discuss-help@ecos.sourceware.org; run by ezmlm Precedence: bulk List-Subscribe: List-Archive: List-Post: List-Help: , Sender: ecos-discuss-owner@ecos.sourceware.org Subject: Re: [ECOS] ECOS Memory Requirements X-SW-Source: 2006-06/txt/msg00017.txt.bz2 Andrew Lunn wrote: > On Thu, Jun 01, 2006 at 02:04:37PM -0400, Moussa A. Ba wrote: > >> Are these high memory requirement because the code is loaded from flash >> to RAM and then executed or is it just that ECOS data structures need so >> much RAM (not that much compared to bigger processors). >> > > eCos can run from ROM. That is the normal setup for AT91SAM7 devices. > > To get an idea of code size i suggest you download anoncvs and play > with the build for the AT91SAM7S. Look at the binaries for the > tests. > You can also try with MCB2100 port, an LPC2xxx setup with 16K RAM (allthough 256K flash) and see how your app compiles). You may need some memory tuning (irq stack, threads' stacks). Ilija -- Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss